Features: 2 slots: the charger is capable of charging two batteries simultaneously without interrupting each other. Fast and efficient: supporting 1000mA and 500mA current charging, saving your valuable time. Safe and sound: overcharging for 8 hours, it will stop automatically. Protecting battery from overcharging, overcurrenting and short circuiting. Wide compatibility: compatible with 3.65V Li-ion rechargeable batteries (size from 10440 to 22650) and 1.2V Ni-MH/Ni-CD (AA AAA C) rechargeable batteries. Convenient and effortless to use: the charger can identify the type of battery automatically. And you can know the status by telling the LED light. Supporting AC and DC voltage, you can use it in your car.